Until recently, no one from the band has commented on the death of Cornell, 52, who was found in his Detroit hotel room May 17, dead from an apparent suicide. Now, drummer Matt Cameron has posted a short, heartfelt note.

“My dark knight is gone,” he wrote on Facebook. “Thank you for the incredible outpouring of kindness and love.”

Pearl Jam guitarist Mike McCready, who performed with Cornell in the Seattle supergroup Temple of the Dog, has also commented about the late vocalist.

“Chris Cornell painted in song the darkness and beauty of life in Seattle,” he told the Seattle Times. “Chris means a lot to me today, as he trusted me to play on Temple. He handed me a dream in getting to actually play on beautiful songs. Informed how I would play on Pearl Jam records in the future, I believe. He gave me the break into the music business I’d wanted since I was 11. He was a friend I will miss. I miss you, brother.”

Pearl Jam posted a photo of Cornell and his dog on Facebook.

Yesterday, Cornell’s Audioslave bandmate, guitarist Tom Morello, posted a photo on Instagram of the band onstage with the caption, “Welcome to Heaven.” Over the weekend, he posted a poem about the late singer:

You’re a prince, you’re a snare, you’re a shadowYou’re twilight and star burn and shadeYou’re a sage, you’re a wound shared, you’re maskedYou’re a pillar of smoke, you’re a platinum heartYou’re a brush fire, you’re caged, you’re freeYour vision pierces, you do not seeYou are pieces strewn on the hillsideYou’re open armed, you’re armed, you’re trueYou’re a revealer of visions, you’re the passenger, you’re a never fading scarYou’re twilight and star burn and shadeYou’re the secret veiled, you’re the secret revealed, you’re surrounded no moreYou’re not there, now you’re always hereYoure a handsome groom, a loving father, a haunted stairwellYou’re the clear bell ringing, the mountains echo your songMaybe no one has ever known youYou are twilight and star burn and shade